Switch-stand.



PATENTED SEPT. 24, 1907.

` M. w. LONG. SWITCH STAND.

APPLIOATIQI FILED FEB. 14, 1907.

.Idlnlnlvlalllllllfvfa TOI? UNITED STATES PATENT if OFFICE4 MALCOLM W. LONG, or HAREISBURG, PENNSYLVANIA, AssIeNoR To THE PENNSYLVANIA STEEL COMPANY, or PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYL- VANIA.

SWITCH-STAND.

Specification of Letters Patent.

Patented sept. 24, 1907.

Application iilod February 14, 1907. Serial No. 85 7,261.

of the United States, and resident of Harrisburg, in

the county of Dauphin, State of Pennsylvania, have invented certain new and useful Improvements in- Switch-Stands, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, of which- Figure l is a plan view of a switch-stand in which my invention is embodied, the top of the casing having been removed, and the target shaft being shown in section. Fig. 2 is a sectional side elevation of Fig. 1. Fig. 3 is a detail, partially in section, showing the target shaft, the arm secured thereto havingthe groove together with the crank and the block engaging said groove; the parts being in the position in which the switch-stand is midway in its operation; that is, in which the lever arm would be in the vertical position, in the act' of throwing the switch from the closed to the open position, or the reverse. Fig. 4 is a perspective of the crank arm on, the lever shaft, with the block detached therefrom.

The object of this invention is to produce a simple and efficient switch-stand which, when the operating lever is brought to either position td close or open the switch, the parts will be locked in such position against any automatic action, yet the switch-stand may be readily operated by hand to bring the switch to either position of adjustment,

. To these ends, the invention consists in the combinations and constructions hereinafter pointed out.

` 1 is a casing of usual construction, in which is journaled the vertical target-shaft, 2; carrying at its lower end the crank, 3, to which the switch-operating rod is adapted to be connected in well known manner.

Secured to the target-shaft, 2, within the casing, is a crank-lug or arm,l 4, having a vertically disposed groove 5, therein, in which groove, 5, rides a block, 6, pivotally secured at the outer end of a crank-arm, 7, of a horizontal shaft, 8, journaled in the casing, 1, and which shaft, 8, has, at its free outer end, the usual weighted operating lever, 9. In this instance the block, 6, is `square and loosely mounted on a pin or stud, l0, extending from crank-arm, 7, but the block may be a roller pivoted to said crank-arm. I prefer a square block, because it has a longer bearing surface against the sides of the groove, 5, in Operating the stand. i

The operation is as ollows:-The parts being in the position of Figs. 1 and 2, the crank, 7, is in a horizontal position, and is, therefore, on dead center, so that,

although it can be moved by lifting the lever 9, ,it cannot be rotated by any power applied to the targetshaft, 2. The operator, desiring to set the switch in its other position, lifts the lever, 9, rotating shaft 8, and crank, 7; and the block, 6, riding in the groove, 5, causes the arm, 4, to rotate, and so the target-shaft, 2, which through crank 3, operates the switch. When the lever, 9, has reached the opposite horizontal position, the crank, 7, has also reached its opposite horizontal or dead Vcenter position. The block, 6, ,being pivoted to arm 7, accommodates itself in the groove, 5, to the relative movements ofthe arms 7 and 4.

I remark that, although the friction would be increased, instead of a pivoted block, 6, I may employ'a cylindrical lug extending from the crank, 7, and engaging the groove, 5. v

Having thusdescribed my invention, I claim as new, and desire to secure by Letters Patenticrank fixed on said shaft, the horizontal shaft, the lever v arm thereon, a crank on said horizontal shaft, one of said cranks having a part engaging the vother crank, said part changing its position of engagement with said other crank during the operation of the stand, substantially as set forth.

A2. In a switch-stand, the combination of the vertical shaft, connections between the same and the switch, a crank fixed on said shaft,v the horizontal shaft, the lever arm thereon, a crank on said horizontal shaft, said crank being horizontal when the switch-stand is in either normal position of adjustment, one of said cranks having a part engaging the oth'er crank, said part changing its position of engagement with said other crank during the operation of the stand, substantially as set forth.

3. In a switch-stand, the combination of the vertical shaft, connections between the same and the switch, a cranklug fixed on said shaft, the horizontal shaft, the lever arm thereon, a crank on said horizontal shaft, one of said cranks having a part slidably engaging the other crank during the operation of the stand, substantially as set forth.

4. In a switch-stand, the combination of the vertical shaft, connections between thesame and the switch, a crank-lug fixed on said shaft, and having the vertical groove therein, the horizontal shaft, the lever a'rm there on, a crank on said horizontal shaft, said crank having a part fitted in and engaging the sides of said groove, substantially as set forth.

5. In a swtchstand, the combination of the vertical shaft, connections between the same and the switch, a crank-lug fixed onv said shaft, and having the vertical groove therein, the horizontal shaft, the lever arm thereon, a crank on said horizontal shaft, and the block pivoted to said crank, and riding in said groove, substantially as set forth.

6. In a switch-stand, the combination of'the vertical shaft, connections between the same and the switch, a

crank-lug fixed. on said' shaft, and. having the vertical groove therein, the horizontal shaft, the lever arm therenn. n crank on said horizontal shaft, and the square block pivotcd to said crank and riding in and fitted t0 said in'oove, substantially as set forth.

7. In a switch-stand, the combination with the casing of a vertical target shaft Journaled therein, connections between the lower end of said shaft and the switch, the

crank-lug fixed on said shaft within said casing, andA 10 having the vertical groove therein, the horizontal shaft 

